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OPERATION
Eaton 9170
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UPS (3–18 kVA) User's Guide S 164201393 Rev E www.eaton.com/powerquality
79
Turning the UPS On
The unit has no physical On/Off switch. Access the UPS On/Off function
through the front panel display.
If the UPS is off, press the ON button through the front panel display to
turn the UPS on again.
If the UPS has been manually set to operate in Bypass or Battery mode,
change the System Control Mode Preference (menu 4 1) selection to
Auto to return to normal Auto mode operation.
NOTE The UPS will not start operating if AC input voltage or frequency is beyond
acceptable limits or if the system mode selection is set to Battery. The UPS can not go
directly from Off to Battery.
Removing Input Power
Always transfer the UPS to Off mode before removing input power. The
batteries will discharge if the input line voltage is disconnected or turned
off without first turning off the UPS.
If the input power source will be disconnected or turned off for more
than a day or two, transfer the UPS to Sleep mode: turn the UPS off,
remove AC input power, press the On button, and then select Battery
Protect (BP). Sleep mode allows the UPS to remain unpowered for up to
six months without having to remove or recharge batteries.
Failure to properly power down the UPS could permanently damage any
installed batteries. Also, if batteries become severely discharged, the
UPS might not start immediately when input power is restored.